Pregnant “Mad Men” star January Jones clutched her growing baby bump as she was snapped running errands in West Hollywood yesterday (May 30). The father of January’s unborn child is a growing mystery and she’s not telling, prompting rumors that the dad may be her ‘X-Men’ director, Matthew Vaughn.

Vaughn, who is married to Claudia Schiffer, is denying all of the allegations, according to the New York Post. His lawyer has commented that the Jones story is an “absolute lie.”